I purchased the Mysa thermostats a little over two months ago. They are perfect for what I need to control the amount of energy we are wasting on heat. I have set up zones and schedules that suit our lifestyle. It has geofencing so that when there are no occupants in the house the heaters are either setback or turned off, your choice.
The thermostats work with Alexia, Apple HomeKit and Google assistant.
It has helped me shave nearly $200 off my utility bill in the two months since I have them installed. I am able to calculate these savings when I compared this past two months usage with my twelve years of record keeping of our energy usage and also factoring in the Degree Day variable.
My only draw back is that I have to interrogate each thermostat individually (all 17 of them) to record the energy used then roll it into my spreadsheet. It would be fantastic if the Sense folk could integrate these thermostats into the Sense monitoring app.
Sense has not found my entire inventory of baseboard heaters, out of the 17 it has found 3. The 3 that it has found are confused with other baseboard heaters that are exactly the same. For instance I have three 2000W, three 1750W, two 1250W, two 1000W, three 750 W and four 500W. I get notification when the heater is on and when I check with my Mysa app its a different heater entirely.
The company link is https://getmysa.com